It makes this area unusable if you want to show a page in a book reader, for example. Or a movie/video.
I also like to spectate games on Twitch/Youtube, and corners are often used for important stats.
I also like to spectate games on Twitch/Youtube, and corners are often used for important stats.
You can look at other examples of controls that are way too close to the edge because they need to work around the bloated corners.
Of course, some of it is just the usual Apple stupidity and ineptness in the UI design (that infected the whole industry): https://www.apple.com/v/iphone-duo/a/images/overview/shared-...
But rounded corners certainly did not help.
And I'll admit that there's chance I'd notice what you're talking about if I saw/used it in person instead of relying on promotional photos.